Add progressive web app companion for cross-platform access

Vite + TypeScript PWA that mirrors the Android app's core features:
- Pre-processed shelter data (build-time UTM33N→WGS84 conversion)
- Leaflet map with shelter markers, user location, and offline tiles
- Canvas compass arrow (ported from DirectionArrowView.kt)
- IndexedDB shelter cache with 7-day staleness check
- Service worker with CacheFirst tiles and precached app shell
- i18n for en, nb, nn (ported from Android strings.xml)
- iOS/Android compass handling with low-pass filter
- Respects user map interaction (no auto-snap on pan/zoom)
- Build revision cache-breaker for reliable SW updates

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

pwa/node_modules/tinyspy/dist/index.cjs

@@ -0,0 +1,179 @@
+"use strict";
+var w = Object.defineProperty;
+var C = Object.getOwnPropertyDescriptor;
+var M = Object.getOwnPropertyNames;
+var E = Object.prototype.hasOwnProperty;
+var G = (e, t) => {
+  for (var r in t)
+    w(e, r, { get: t[r], enumerable: !0 });
+}, F = (e, t, r, s) => {
+  if (t && typeof t == "object" || typeof t == "function")
+    for (let n of M(t))
+      !E.call(e, n) && n !== r && w(e, n, { get: () => t[n], enumerable: !(s = C(t, n)) || s.enumerable });
+  return e;
+};
+var j = (e) => F(w({}, "__esModule", { value: !0 }), e);
+
+// src/index.ts
+var $ = {};
+G($, {
+  createInternalSpy: () => S,
+  getInternalState: () => I,
+  internalSpyOn: () => P,
+  restoreAll: () => _,
+  spies: () => c,
+  spy: () => V,
+  spyOn: () => L
+});
+module.exports = j($);
+
+// src/utils.ts
+function x(e, t) {
+  if (!e)
+    throw new Error(t);
+}
+function y(e, t) {
+  return typeof t === e;
+}
+function k(e) {
+  return e instanceof Promise;
+}
+function f(e, t, r) {
+  Object.defineProperty(e, t, r);
+}
+function l(e, t, r) {
+  Object.defineProperty(e, t, { value: r });
+}
+
+// src/constants.ts
+var u = Symbol.for("tinyspy:spy");
+
+// src/internal.ts
+var c = /* @__PURE__ */ new Set(), D = (e) => {
+  e.called = !1, e.callCount = 0, e.calls = [], e.results = [], e.resolves = [], e.next = [];
+}, q = (e) => (f(e, u, { value: { reset: () => D(e[u]) } }), e[u]), I = (e) => e[u] || q(e);
+function S(e) {
+  x(
+    y("function", e) || y("undefined", e),
+    "cannot spy on a non-function value"
+  );
+  let t = function(...s) {
+    let n = I(t);
+    n.called = !0, n.callCount++, n.calls.push(s);
+    let R = n.next.shift();
+    if (R) {
+      n.results.push(R);
+      let [o, m] = R;
+      if (o === "ok")
+        return m;
+      throw m;
+    }
+    let p, d = "ok", a = n.results.length;
+    if (n.impl)
+      try {
+        new.target ? p = Reflect.construct(n.impl, s, new.target) : p = n.impl.apply(this, s), d = "ok";
+      } catch (o) {
+        throw p = o, d = "error", n.results.push([d, o]), o;
+      }
+    let g = [d, p];
+    return k(p) && p.then(
+      (o) => n.resolves[a] = ["ok", o],
+      (o) => n.resolves[a] = ["error", o]
+    ), n.results.push(g), p;
+  };
+  l(t, "_isMockFunction", !0), l(t, "length", e ? e.length : 0), l(t, "name", e && e.name || "spy");
+  let r = I(t);
+  return r.reset(), r.impl = e, t;
+}
+function A(e) {
+  let t = I(e);
+  "returns" in e || (f(e, "returns", {
+    get: () => t.results.map(([, r]) => r)
+  }), [
+    "called",
+    "callCount",
+    "results",
+    "resolves",
+    "calls",
+    "reset",
+    "impl"
+  ].forEach(
+    (r) => f(e, r, { get: () => t[r], set: (s) => t[r] = s })
+  ), l(e, "nextError", (r) => (t.next.push(["error", r]), t)), l(e, "nextResult", (r) => (t.next.push(["ok", r]), t)));
+}
+
+// src/spy.ts
+function V(e) {
+  let t = S(e);
+  return A(t), t;
+}
+
+// src/spyOn.ts
+var O = (e, t) => Object.getOwnPropertyDescriptor(e, t), b = (e, t) => {
+  t != null && typeof t == "function" && t.prototype != null && Object.setPrototypeOf(e.prototype, t.prototype);
+};
+function P(e, t, r) {
+  x(
+    !y("undefined", e),
+    "spyOn could not find an object to spy upon"
+  ), x(
+    y("object", e) || y("function", e),
+    "cannot spyOn on a primitive value"
+  );
+  let [s, n] = (() => {
+    if (!y("object", t))
+      return [t, "value"];
+    if ("getter" in t && "setter" in t)
+      throw new Error("cannot spy on both getter and setter");
+    if ("getter" in t)
+      return [t.getter, "get"];
+    if ("setter" in t)
+      return [t.setter, "set"];
+    throw new Error("specify getter or setter to spy on");
+  })(), R = O(e, s), p = Object.getPrototypeOf(e), d = p && O(p, s), a = R || d;
+  x(
+    a || s in e,
+    `${String(s)} does not exist`
+  );
+  let g = !1;
+  n === "value" && a && !a.value && a.get && (n = "get", g = !0, r = a.get());
+  let o;
+  a ? o = a[n] : n !== "value" ? o = () => e[s] : o = e[s];
+  let m = (v) => {
+    let { value: z, ...h } = a || {
+      configurable: !0,
+      writable: !0
+    };
+    n !== "value" && delete h.writable, h[n] = v, f(e, s, h);
+  }, K = () => a ? f(e, s, a) : m(o);
+  r || (r = o);
+  let i = S(r);
+  n === "value" && b(i, o);
+  let T = i[u];
+  return l(T, "restore", K), l(T, "getOriginal", () => g ? o() : o), l(T, "willCall", (v) => (T.impl = v, i)), m(
+    g ? () => (b(i, r), i) : i
+  ), c.add(i), i;
+}
+function L(e, t, r) {
+  let s = P(e, t, r);
+  return A(s), ["restore", "getOriginal", "willCall"].forEach((n) => {
+    l(s, n, s[u][n]);
+  }), s;
+}
+
+// src/restoreAll.ts
+function _() {
+  for (let e of c)
+    e.restore();
+  c.clear();
+}
+// Annotate the CommonJS export names for ESM import in node:
+0 && (module.exports = {
+  createInternalSpy,
+  getInternalState,
+  internalSpyOn,
+  restoreAll,
+  spies,
+  spy,
+  spyOn
+});